Safety rigging-hook.



i H. A. SINCLAIR.

SAFETY meme- HOOK. APPLICATION FILED JULY 23 l9\7- 'RENEWED OCT. 28, 1918.

A TTORNE Y 'iApplication filed Jul 23. anagram; $2,140.

r a two-step safety latching device which re 1 am A sINcLAIn oE neuron,

l BJGGiNQfiooK.

vents the accidental removal of a line roin the hook as well "as preventing the hook from catching upon other lines, brush and the like.

Another object of my device isto-provide a hook latch which. requires a predetermined sequence of two or more operations in order s to either place a line within the hook or to release the line from the hook. 'In logging operations and the like the'usual'type of open hook frequently'releases the line j when any-slack occurs. Moreover, the hook catches upon brush, stumps and thejlike and-fre quently becomes wedged full of debris which must be loosened and dug-out before the I 11y get out of order.

l'is more fully explained 1' 1ng drawing and ed claim. ,4

line can be released.

as well as preventing the choking of the}; hook.

Another l' Gt of my, device is to provide a safetyyhook which is easily'and cheaply manufactured,"which can not readotherobjectswill appear-asiny invention the following specification," illustrated in the accompanypointed outin the append- In the drawings Figure 1 isa side elevation of my improved hook. Fig.2 is a frag.-v mentary-front elevation ofsame;

'Referring more particularly to the draw; ings numeral 1 indicates the head of a hook which is provided with the usual eye 2. A straight shank 3 extends downwardly from the head 1 and after being bent into an open hook is returned in the form ofa point 4. The point 4: is disposed oppositely of head 1. and is vertically slotted ina plane at right angles to the axis of 'the eye 2. The head 1... is provided with a notch 5 on its inner side and oppositely disposed to the slot: in the point 4. A latch 6 isv pivoted asat 7 within the slotted end of point 4. 1 Latch 6 is provided with notches Sand 9 cut in its periphs i ifi ca ibirdf Letters reh t; f

lat'ch counter-clockwise until the notch 9 j counter-clockwise.

My device is designed to prevent the accidental release, of theline .30

lembodiment of' my invention, I am aware 'that'zmany minor changestherein will readthe art without departing from the-spirit" a desire to avoid being limited A rigging hook compr sing hook inwardly extended projection inwardly extended the first mentioned ing a cable attaching opening disposed to Reliweiii; d tain-2 osed1to'notcb5wliil be volved the notch 9. is brought"i11to 'register' with the notch 5. A thumb lever 10 is also a part of the latch '6 and acts as a limit stop against a shoulder ll on the point of the hook; That portion of the latch 6 which,

lies between the n0tches8 and .9'normallyfits slidably within a channell2 in the upper portion of the head of "the hook while :that part ofthe latch on the opposite 'side of the" notch 8 fits close to that" part of the headdig I rectly below the notch 5. When innornial positionas shown a line may be placed with; in the hook by first bringing'the line into contact with the notch 9; then revolvethelregisters with ,the notch 5 next movej the I line into? notch 5] and return the latch into notch ;8 rand again-rotate the latch" verse of these just described. It will be" readily-seen that it is almost impossible for f a line: to accidentally engage or disengage L itself with the' hook. dueflto the definite. se5'e5 quence of several Toperations necessary; to

bring. thealine' into engagement with the-- s hook. g WhileI havefshown'aparticular forrnof suggest theniselves to others skilled in i and scope of the invention," andpl therefore to theexactl form' f'sho'wn and d qib d, Having.

"scribed myinvention, what'I'claim as new i and desire to protect byiLettersPatent, is ,T

an elongated member open at onefend, the end of one of thelegs-of the hook 'member having an formed in its saidleg having a shorter projection spaced from projection, said leg hav-Av edge with'a groove,

one side of the projections and in substan tialalinement with "the center of the leg, the c and disposedbetween and spaced from the g I to normal? posit on"; next move the hne} I r The line will now read-t; V ily release itsel f from notch 8. and bewithin j l V I Openings, a latch fitted in the bifurcated portion curved end of the leg, a pivot pin extending through the openings in the bifurcated portion and the latch, said latch being formed with two spaced inwardly'extende-d projections between which is formed a depression and on the upper edge of said latch beyond the outer' projection thereon is formed a second projection, the outermost tion fitting in the groove and the innermost pro ect10n registering with the short pro ection on the leg, the latch having an extension which abuts against the outer edge of the curved leg to limit the movement and hold said latch in normal position.

In testimony whereof I afiix my signature.

I IIEIRBERI A. SINCLAIR.

93k! 9; ms; my h h med t in a h by a r i s the comm ssioner of menu,

' wumnmn, n. o." 

